Sony PS-X65 - Mechanical Adjustments; Electrical Adjustments

SECTION 3
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
Vertical-sensitivity Adjustment
1. Perform the longitudinal adjustment.
2. Adjust the pivot bearings and the pivot-locking
nuts so that the tonearm sinks more than 5mm
(%s2 inches) when the 40 mg weight is placed on
the head shell, and the tonearm is in a horizontally
balanced position when the weight is removed.
Note: Tighten the pivot bearings as shown below.
more than 5 mm (7/3. ”)
Stylus Height Adjustment
1. Bring the tonearm above the record.
2. Lift the cueing lever up and make sure that the
clearance between the stylus tip and the record is
5—9 mm (7/32—g inches).
. If necessary, loosen the adjustment screw (M3 x 3)
and adjust the arm lifter height.
5-9mm
(Ys2—9a 0)
SS
L-shaped wrench
dy 1.5mm
movable shutter
Coil Plate Position Adjustment
1. Adjust the coil plate position so that the movable
shutter does not touch the detection part when
the arm pipe is moved horizontally.
position-detecting board
circuit board
coil plate holder (B)
detection
part
movable shutter circuit board
holder (A)
Position-detecting LED board
PS-X65
L-shaped wrench
le 1.5mm
PS-X65
3-2. ELECTRICAL ADJUSTMENTS
Drop-point Adjustment
1. Set RV501 to the mechanical-mid position.
2. Adjust RV103 so that the stylus drops on the
specified point of the test record.
YFSCA6
YFSB-6 14 to 32
3. When RV501 is turned clockwise, the count of
drop-point should be smaller than the specified.
RV103
RV101 RV102
Slit A and B Adjustments
1. Connect a dual-trace oscilloscope to TP6 (for slit
B) and TP7 (for slit A).
. Push the ARM TRANSPORT button <j (forward)
or > (back) and swing the tonearm.
. During the tonearm swinging, adjust RV102 (slit
B) and RV101 (slit A) to obtain the square waves
as shown below.
. Push the ARM TRANSPORT button <j (forward)
or > (back) and swing the tonearm.
. Move the position-detecting board for the phase
difference shown below.
TP6
(slit B)
TP7 iti i
: osition detecting
(slit
A)
fehl
dual-trace
oscilloscope